UITabBar项下添加gif动画

Question

我有一个 UITabBarController 有 5 个标签。

我有一个 GIF 文件要放在每个选项卡下。

我正在使用 3rd party API (UIImage extension) called SwiftGif 来使用 gif，所以问题也可以这样问：

"How can I place a UIImage as the background of my UITabBar"

但我想说得更具体一些，以帮助您更好地理解。

Answer 1

试试这个来改变你的 tabBar 的背景 self.tabBarController?.tabBar.backgroundImage = UIImageView(image: UIImage.gifWithName("yourGifName")) 请记住，这个语法来自 Swift 3 - 如果你正在使用 Swift 2，你可能必须稍微改变一下

Answer 2

Swift 4 : 一个 class 为你的标签栏，然后像这样设置图像：

import UIKit
import SwiftGifOrigin  ///to install that pod:  https://github.com/bahlo/SwiftGifCreate 

class TabbarVC: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()


        let myTabBarItem1 = (self.tabBar.items?[0])! as UITabBarItem
        myTabBarItem1.image = UIImage(named: "your unselected image")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
        myTabBarItem1.selectedImage = UIImage.gif(asset: "your gif")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
        myTabBarItem1.title = ""
        myTabBarItem1.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)

    }

}

Answer 3

这是对我有用的解决方案，只需在 Tabbar 中为所选图像设置 gif class。

 import UIKit

class TabbarVC: UITabBarController {

  override func viewDidLoad() {
    super.viewDidLoad()

    //Set Selected image for all items, I'm doing only for item 1
    let myTabBarItem1 = (self.tabBar.items?[0])! as UITabBarItem
    myTabBarItem1.selectedImage = UIImage.gifImageWithName("image name")

  }

}

这是从 URL/Bundle/Name.

加载 Gif 的扩展

extension UIImage {

  public class func gifImageWithData(_ data: Data) -> UIImage? {
      guard let source = CGImageSourceCreateWithData(data as CFData, nil) else {
          print("image doesn't exist")
          return nil
      }
      return UIImage.animatedImageWithSource(source)
  }

  public class func gifImageWithURL(_ gifUrl:String) -> UIImage? {
      guard let bundleURL:URL = URL(string: gifUrl)
          else {
              print("image named \"\(gifUrl)\" doesn't exist")
              return nil
      }
      guard let imageData = try? Data(contentsOf: bundleURL) else {
          print("image named \"\(gifUrl)\" into NSData")
          return nil
      }
      return gifImageWithData(imageData)
  }

  public class func gifImageWithName(_ name: String) -> UIImage? {
      guard let bundleURL = Bundle.main
        .url(forResource: name, withExtension: "gif") else {
              print("SwiftGif: This image named \"\(name)\" does not exist")
              return nil
      }
      guard let imageData = try? Data(contentsOf: bundleURL) else {
          print("SwiftGif: Cannot turn image named \"\(name)\" into NSData")
          return nil
      }

      return gifImageWithData(imageData)
  }

UITabBar项下添加gif动画

Add gif animation under UITabBar item

iphone

cocoa-touch

uitabbarcontroller

ios

swift